Use the following procedure to open the Site Assets document library on the top-level site of the site collection that the workflow template was saved to and then download the workflow template as a .wsp file to a local folder on the server that is running Microsoft SharePoint Server 2010 or a network share. The downloaded file can then be uploaded to the Solutions Gallery of any site collection.

To download the WSP file to a file location

On the top-level site, in the Quick Launch, click All Site Content.

On the All Site Content page, in the Document Libraries section, click Site Assets.

Point to the name of the workflow that you want to edit and click the arrow that appears.

Point to Send To, and then click Download a Copy.

In the File Download dialog box, click Save.

In the Save As box, type the location to save the file, and then click Save.

Use one of the following procedures to upload the .wsp file to the Solution Gallery of a site collection. This will make the workflow template available as a feature which you will then activate on the site collection. This makes the workflow available as a feature on all sites in the site collection. However, this does not activate the feature on any sites in the site collection.

We recommend that you use Windows PowerShell when performing command-line administrative tasks. The Stsadm command-line tool has been deprecated, but is included to support compatibility with previous product versions.

The feature name is not the same name that you gave the workflow. Instead, the feature name is typically the workflow name with "ListInstances" appended to it.
If you are not sure of the name of the feature that you want to activate, you can do the following to verify the feature name. 1) Make a copy of the .wsp file and change the file name extension on the copied file to .cab. 2) In Windows Explorer, right-click the .cab file, and then click Open. 3) Select feature.xml. The feature name is listed in the Path column.

We recommend that you use Windows PowerShell when performing command-line administrative tasks. The Stsadm command-line tool has been deprecated, but is included to support compatibility with previous product versions.